Kimahriman commented on a change in pull request #33281:
URL: https://github.com/apache/spark/pull/33281#discussion_r667343014
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/SubexpressionEliminationSuite.scala
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@@ -323,6 +323,34 @@ class SubexpressionEliminationSuite extends SparkFunSuite
with ExpressionEvalHel
assert(commonExprs.head.expr eq add3)
}
+ test("SPARK-36073: SubExpr elimination should include common child exprs of
conditional " +
+ "expressions") {
+ val add = Add(Literal(1), Literal(2))
+ val ifExpr1 = If(Literal(true), add, Literal(3))
+ val ifExpr3 = If(GreaterThan(add, Literal(4)), Add(ifExpr1, add),
Multiply(ifExpr1, add))
+
+ val equivalence = new EquivalentExpressions
+ equivalence.addExprTree(ifExpr3)
Review comment:
What was the behavior of this?
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